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wordfilter.lua
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wordfilter.lua
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--[[
mattata v2.0 - Word Filter Plugin
]]
local plugin = {}
plugin.name = 'wordfilter'
plugin.category = 'admin'
plugin.description = 'Toggle word filter and process filtered messages'
plugin.commands = { 'wordfilter' }
plugin.help = '/wordfilter <on|off> - Toggle word filtering. Filtered words are managed with /filter and /unfilter.'
plugin.group_only = true
plugin.admin_only = true
function plugin.on_message(api, message, ctx)
if not message.args then
local enabled = ctx.db.call('sp_get_chat_setting', { message.chat.id, 'wordfilter_enabled' })
local status = (enabled and #enabled > 0 and enabled[1].value == 'true') and 'enabled' or 'disabled'
return api.send_message(message.chat.id, string.format(
'Word filter is currently <b>%s</b>.\nUsage: /wordfilter <on|off>', status
), { parse_mode = 'html' })
end
local arg = message.args:lower()
if arg == 'on' or arg == 'enable' then
ctx.db.call('sp_upsert_chat_setting', { message.chat.id, 'wordfilter_enabled', 'true' })
require('src.core.session').invalidate_setting(message.chat.id, 'wordfilter_enabled')
return api.send_message(message.chat.id, 'Word filter has been enabled.')
elseif arg == 'off' or arg == 'disable' then
ctx.db.call('sp_upsert_chat_setting', { message.chat.id, 'wordfilter_enabled', 'false' })
require('src.core.session').invalidate_setting(message.chat.id, 'wordfilter_enabled')
return api.send_message(message.chat.id, 'Word filter has been disabled.')
else
return api.send_message(message.chat.id, 'Usage: /wordfilter <on|off>')
end
end
function plugin.on_new_message(api, message, ctx)
if not ctx.is_group or not message.text or message.text == '' then return end
if ctx.is_global_admin or ctx:check_admin() then return end
if not require('src.core.permissions').can_delete(api, message.chat.id) then return end
-- check if wordfilter is enabled (cached)
local session = require('src.core.session')
local enabled = session.get_cached_setting(message.chat.id, 'wordfilter_enabled', function()
local result = ctx.db.call('sp_get_chat_setting', { message.chat.id, 'wordfilter_enabled' })
if result and #result > 0 then return result[1].value end
return nil
end, 300)
if enabled ~= 'true' then
return
end
-- get filters for this chat (cached)
local filters = session.get_cached_list(message.chat.id, 'filters', function()
return ctx.db.call('sp_get_filters', { message.chat.id })
end, 300)
if not filters or #filters == 0 then return end
local text = message.text:lower()
for _, f in ipairs(filters) do
-- Skip patterns that could cause catastrophic backtracking
if #f.pattern > 128 then goto continue end
local ok, matched = pcall(function()
return text:match(f.pattern:lower())
end)
if ok and matched then
-- execute action
if f.action == 'delete' then
api.delete_message(message.chat.id, message.message_id)
elseif f.action == 'warn' then
api.delete_message(message.chat.id, message.message_id)
local hash = string.format('chat:%s:%s', message.chat.id, message.from.id)
ctx.redis.hincrby(hash, 'warnings', 1)
api.send_message(message.chat.id, string.format(
'<a href="tg://user?id=%d">%s</a> has been warned for using a filtered word.',
message.from.id, require('telegram-bot-lua.tools').escape_html(message.from.first_name)
), { parse_mode = 'html' })
elseif f.action == 'ban' then
api.delete_message(message.chat.id, message.message_id)
api.ban_chat_member(message.chat.id, message.from.id)
elseif f.action == 'kick' then
api.delete_message(message.chat.id, message.message_id)
api.ban_chat_member(message.chat.id, message.from.id)
api.unban_chat_member(message.chat.id, message.from.id)
elseif f.action == 'mute' then
api.delete_message(message.chat.id, message.message_id)
api.restrict_chat_member(message.chat.id, message.from.id, {
can_send_messages = false,
can_send_audios = false,
can_send_documents = false,
can_send_photos = false,
can_send_videos = false,
can_send_video_notes = false,
can_send_voice_notes = false,
can_send_polls = false,
can_send_other_messages = false,
can_add_web_page_previews = false,
can_invite_users = false,
can_change_info = false,
can_pin_messages = false,
can_manage_topics = false
}, { until_date = os.time() + 3600 })
end
return
end
::continue::
end
end
return plugin

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